Private guards in California are mandated to carry both photo identification and valid security certification while on duty. The State of California handles such certification through the Bureau of Security and Investigative Services division of the California Department of Consumer Affairs.
Guards in California are issued a guard card by the BSIS after passing a criminal background screening and completing a 40-hour training course. Additional permits may be acquired for batons or firearms.
In the United States, private security guards are generally required by state law to be licensed. The licensing process involves a criminal background check and various levels of training certification, depending on whether the guard is armed or not. Carrying documentation of this license while on duty is usually mandatory.